Effect of Si addition on microstructure and mechanical properties of Al-Mg-Si-Zn alloy

被引：0

作者：

Fan-bo Meng ^{[1
]}

Hong-jun Huang ^{[1
]}

Xiao-guang Yuan ^{[1
]}

Ze-wen Cui ^{[2
]}

Xian-lei Hu ^{[3
]}

机构：

[1] School of Materials Science and Engineering, Shenyang University of Technology

[2] School of Materials Science and Engineering, Liaoning Technology University

[3] State Key Laboratory of Rolling and Automation, Northeastern University

来源：

ChinaFoundry | 2020年 / 17卷 / 01期

关键词：

Si content; mean shape factor; area fraction; tensile strength; aluminum alloy;

D O I：

暂无

中图分类号：

TG146.21 [];

学科分类号：

080502 ;

摘要：

The effect of Si addition on the microstructure and mechanical properties of Al-Mg-Si-Zn aluminum alloys were investigated. Results show that the microstructure of Al-Mg-Si-Zn alloy with low Si contents is mainly composed of Mg2 Si and Mg5 Si6 phases. With the increasing of Si content, Si and Al3.21Si0.47phases precipitate in the form of eutectic phases in the alloys, at the same time, the mean shape factor of the second phase firstly increases and then decreases. Regression analysis results show that the Si content has the main influence and the mean shape factor has the least influence on tensile strength. Tensile strength increases significantly with the addition of Si, however, there is a remarkable drop in the elongation of the alloys. Decreased elongation is related to the formation of monotonous Al(200) structure and the enlargement of interplanar spacing of(111) and(200) crystalline planes.

引用

页码：15 / 20

页数：6

共 15 条

[1] Formation of Si nanoparticle in Al matrix for Al-7wt.%Si alloy during complex shear flow casting[J] . Tao Wang,Xiaohua Chen,Xiang Luo,Han Jiang,Mingwen Chen,Zidong Wang.Journal of Alloys and Compounds . 2018
[2] Dependence of nonlinear ultrasonic characteristic on second-phase precipitation in heat-treated Al 6061-T6 alloy[J] . Jongbeom Kim,Kyung-Young Jhang,Chungseok Kim.Ultrasonics . 2018
[3] Effect of Cu content on precipitation and age-hardening behavior in Al-Mg-Si-xCu alloys[J] . Qiao Xiao,Huiqun Liu,Danqing Yi,Deyan Yin,Yuqiang Chen,Ying Zhang,Bin Wang.Journal of Alloys and Compounds . 2017
[4] Effect of Zn addition on the precipitation behaviors of Al–Mg–Si–Cu alloys for automotive applications[J] . M. X. Guo,X. K. Zhang,J. S. Zhang,L. Z. Zhuang.Journal of Materials Science . 2017 (3)
[5] The influence of Mg/Si ratio and Cu content on the stretch formability of 6xxx aluminium alloys[J] . Hao Zhong,Paul A. Rometsch,Lingfei Cao,Yuri Estrin.Materials Science ＆ Engineering A . 2016
[6] The influence of Mg/Si ratio on the negative natural aging effect in Al–Mg–Si–Cu alloys[J] . G.H. Tao,C.H. Liu,J.H. Chen,Y.X. Lai,P.P. Ma,L.M. Liu.Materials Science ＆ Engineering A . 2015
[7] The natural aging and precipitation hardening behaviour of Al-Mg-Si-Cu alloys with different Mg/Si ratios and Cu additions[J] . Lipeng Ding,Zhihong Jia,Zhiqing Zhang,Robert E. Sanders,Qing Liu,Guang Yang.Materials Science ＆ Engineering A . 2015
[8] The effect of Zn on the age hardening response in an Al–Mg–Si alloy[J] . X.P. Ding,H. Cui,J.X. Zhang,H.X. Li,M.X. Guo,Z. Lin,L.Z. Zhuang,J.S. Zhang.Materials and Design . 2015
[9] The effect of Zn on precipitation in Al–Mg–Si alloys[J] . Takeshi Saito,Sigurd Wenner,Elisa Osmundsen,Calin D. Marioara,Sigmund J. Andersen,Jostein R?yset,Williams Lefebvre,Randi Holmestad.Philosophical Magazine . 2014 (21)
[10] Influence of Sc modification on the fluidity of an A356 aluminum alloy[J] . Wattanachai Prukkanon,Nakorn Srisukhumbowornchai,Chaowalit Limmaneevichitr.Journal of Alloys and Compounds . 2009 (1)

← 1 2 →